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A vapor barrier was installed on the floor of this crawlspace and extended up the walls then the foundation walls were covered with rigid foam.

A vapor barrier was installed on the floor of this crawlspace and extended up the walls then the foundation walls were covered with rigid foam.
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A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location

A ventilation controller with a manual override is located on a central air handler fan that is located in an accessible location
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A ventless gas fireplace has no chimney

A ventless gas fireplace has no chimney
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A weatherstripping gasket is installed on the framing that the crawlspace hatch panel rests on.

A weatherstripping gasket is installed on the framing that the crawlspace hatch panel rests on.
Presentation:

A Whole New World – ENERGY STAR + HVAC Grading

Presentation:

Advances in Manufactured Home Energy Efficient Design

Advances in Manufactured Home Energy Efficient Design
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After securing the inner coil, cover the draw band and the seam with a generous amount of mastic

After securing the inner coil, cover the draw band and the seam with a generous amount of mastic
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Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)

Air flow is produced when central HVAC fan is energized (set thermostat to “fan”)
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Air inlet is located in a convenient place for homeowner to clean

Air inlet is located in a convenient place for homeowner to clean
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Air inlet is not convenient for cleaning and located next to exhaust outlets

Air inlet is not convenient for cleaning and located next to exhaust outlets
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Air seal and insulate flex ducts

Air seal and insulate flex ducts
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Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam

Air seal duct boot to ceiling by installing fiberglass mesh tape and mastic over seam
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Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.

Air seal the floor above an unconditioned basement or crawlspace and make sure floor insulation is in full contact with the underside of the subfloor.
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Air seal your crawlspace access hatch with weatherstripping and insulate the hatch panel with rigid foam and/or batt insulation to minimize air leakage at this common air leakage location.

Air seal your crawlspace access hatch with weatherstripping and insulate the hatch panel with rigid foam and/or batt insulation to minimize air leakage at this common air leakage location.
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All of the exhaust fans are wired to one labeled switch at the electrical panel

All of the exhaust fans are wired to one labeled switch at the electrical panel
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All other supply ducts and all return ducts in unconditioned space have insulation ≥ R-6

All other supply ducts and all return ducts in unconditioned space have insulation ≥ R-6
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All return air and mechanically supplied outdoor air pass through filter prior to conditioning

All return air and mechanically supplied outdoor air pass through filter prior to conditioning
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Although crawlspaces are not recommended in flood-prone areas, they can be designed or retrofitted to greatly increase resistance to flood damage.

Although crawlspaces are not recommended in flood-prone areas, they can be designed or retrofitted to greatly increase resistance to flood damage.
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An air vent mounted high on the radiator will shut quickly and limit the radiator’s heat output

An air vent mounted high on the radiator will shut quickly and limit the radiator’s heat output
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An air vent mounted low on the radiator will allow more steam to enter the radiator before it shuts

An air vent mounted low on the radiator will allow more steam to enter the radiator before it shuts
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An anode bar (upper grey bar) is installed in a steel boiler

An anode bar (upper grey bar) is installed in a steel boiler
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An elevated HVAC condenser on a cantilever platform, in a coastal climate

An elevated HVAC condenser on a cantilever platform, in a coastal climate
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An energy recovery ventilator (ERV) transfers both heat and moisture between incoming and outgoing streams of air

An energy recovery ventilator (ERV) transfers both heat and moisture between incoming and outgoing streams of air
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An Energy Recovery Ventilator provides outside air to this dwelling unit; a range hood with dedicated makeup air provides local kitchen exhaust; a Packaged Terminal Heat Pump provides conditioned air

An Energy Recovery Ventilator provides outside air to this dwelling unit; a range hood with dedicated makeup air provides local kitchen exhaust; a Packaged Terminal Heat Pump provides conditioned air